By: Anna and Blakely

Hemlock Wooly Adelgid


Type of Organism:

The hemlock wooly adelgid is an aphid more commonly known as an insect.


The species originated in Japan and China. It was accidently introduced to other areas in 1924.

How Did It Spread to Other Areas:

It was transported via garden waste, hikers clothes, animal (such as birds and deer), and wind. Also through trading and shippment of agricultural products.

How Far Has It Spread:

Once introduced to the U.S. in 2005 they recorded that it has spread from Maine to Georgia.

Damage to North Carolina:

The hemlock wooly adelgid harms trees by sucking out the sap from the trees twigs. The tree begins to lose needles until it reaches the point where it can no longer go through photosynthesis. On their own adelgids can kill a tree within 3 to 4 years.

Management Plan

Ways to Get Rid of Organism:

  • horticultural oil
  • poisonous insecticides
  • insecticidal soap
How To Prevent Them:
  • Be careful about what items are being transported
  • Check clothing after a hike or trip if you were in an area where they are commonly found